Coordinated multipoint (CoMP)
has been explored to increase throughput, coverage and reliability [1]}, [2]}, [3]}, [4]}.
In [1]}, CoMP beamforming (BF) and power control (PC) in uplink (UL) were presented.
Considering downlink (DL) as a virtual UL, UL-DL CoMP BF and PC were further proposed in [2]} in a distributed manner using local measurements.
The authors in [3]} showed Lagrangian-based duality for multiuser MIMO systems and proposed a distributed method to lower computational load on users and BSs.
CoMP BF and PC were also studied for coarsely quanitized massive MIMO systems, and their closed-form solution and extension to a wideband scenario were investigated [4]}.
The synergy between massive MIMO and CoMP is studied with higher throughput [9]}.
